Door-operating device



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N0. 524,769. Patented Aug. 21, 1894.

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G. RISO HMULLER. DOOR OPERATING DEVIUE.

No. 524,769. Pate'nted'Aug. 21, 1894.

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G. RISCHMULLER. DOOR OPBRATINGDEVIGE.

N0.-524,"769. Patented Aug. 21, 1894..

1 UNITED STATES" PATENT I ()FFICE.

GEORGE RISCHMULLER, OF SAN FRANCISCO, CALIFORNIA.

DOOR-OPERATING DEVICE.

SPECIFICATION forming part of Letters Patent No. 524,769, dated August21, 1894.

Application flled October 1, 1892.

To all whom it may concern:

Be it known that I, GEORGE RISCHMULLER, a GIIIZ'BD of the United States,residing at San Franc1sco, in the county of San Francisco and State ofCalifornia, have invented certain new and useful Improvements inDoor-Operating Devices; and I dohereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanyingdrawings, and to theletters of reference marked thereon, which form a part of thisspecification.

My invention relates to an improved dooroperating device, designed moreespecially. for operating or opening and closing a street, orground-floor, door from an upper floor, and it has for its object toprovide for the direct transmittal of the power of the hand-actuatedlever to the door or object to be operated upon; to effect both theopening and closing of the door from the same elevated or distant point;to provide for. the closing of the door after opening of the same by areverse movement of the hand-actuated lever; to prevent the suddenclosing or slamming of the door from currents or drafts of air throughthe house;

to dispose or inclose the door operating mechanism properly, and to lockor clutch the door-latch actuating mechanism against operation when thedoor is opened in the usual way by the application of the hand to theknob; and to these ends the invention con sists of a certain novelcombination and arrangement of parts, substantially as hereinafter morefully disclosed and pointed out in the claims.

In the accompanying drawings,-F igure 1 is a broken perspective viewshowing my invention, in part, as applied for use to a street, orground-floor, door. Figs. 2, 3 and 4 are reverse side views, and an edgeview, respectively, of the bracket-plate, carrying the primary lever foractuating the door-latch, the retracting dog and the clutch or look forsaid lever. Fig. 5 is a partly horizontal section and partly plan viewof the same parts, also showing broken-away the lever that immediatelyacts upon the primary lever of the doorlatch retracting dog. Figs. 6 and7 are side @of the latch retracting dog.

and plan views, respectively, of a bell-crank,

Serial No. 447,546. (No model.)

with its actuating levers, that connects with the lever acting upon saidprimary lever. Figs. 8 and 9 are front and plan views of the leveradapted to act upon said primary lever. Figs. 10 and 11 are a side and asectional view Figs. 12 and 13 are a side view, and a plan view,respectively, of the hand-actuated lever,.with its guide-bracket andlinks adapted to .connect by lines or wires withthe actuating levers ofthe aforesaid bell-crank, and Figs. 14, 15 and 16 are a brokenperspective view, and side views at right angles toeach other,respectively, of a modification of the aforesaid bellcrank and itsactuating levers, for use in a turn or angle of the stairway down whichthe lines or wires extend.

In carrying out my invention, I provide a centrally pivoted lever A, letinto the stairway casing at the head of the stairs, upon an upper floor,and having a knobbed handle a standing at an obtuse angle, ordiagonally, thereto, with its knob projecting through an arcuateguide-slot a in a plate or board covering a recess in said casing whichrecess receives'said lever and its handle, to provide for the convenientmanipulation of the lever. The lever A has at its ends two short links0!, a and to these are designedto be connected the upper ends of twostout wires or lines B, the lower ends of which are also connected toshort links 0 0 carried at the ends of a lever C centrally pivoteduponthe uprlght arm (1 of a bracket D screwed or secured to the base or sillof the studding of the groundfloor hall-way, near the rear edge of thedoor. Upon the same pivot as the lever C, is also centrally pivoted abent leverE connected at one end by a short link c to one end of thelever C. r v

The opposite or forward. lower end ofthe bent lever E is connected by alink a to one end of a horizontal bell-crankl-F, pivoted or hung upon apivot-stud of the bracket D, the

opposite free end of the bell-crank F being lindric portion or stud t'adapted to engage one arm of a. right-angled lever I, hung upon a pintleor pivotp supported upon and at the inner edge of a vertical plate Jsecured or screwed to the hinged post of the door-frame.

K is a latch or dog having its notched edge adapted to engage abeveled-edge of the lever I, and lock it against movement, and pivotedto swing or move in a vertical plane upon a pivot or stud it supportedin abracket h projecting from the plateJ. The upper arm of the latch ordog K is held by a headed end thereof, and has a limited amount of play,in the slotted end of a slide or push-bar L having a reduced cylindricendj sliding in an aperture in the plate J and projecting thereattoward, and so as to be engaged by, the back edgeof the door.

The lever I has one arm carried downward and outward and to the free endf thereof is connected a wire or line g passing between the carpet-stripand floor and connecting withan angle-lever M pivoted upon a plate N,secured in the door-jamb, near the floor.

O, is a dog, hung or pivoted upon a pintle or pivot, in the opening of aframe-like casting or plate P, integral With the catch or socket plate Ufastened to, and flush with, the doorjamb, said dog being connected, atits upper end by means of a wire it with the upper end of theangle-lever M. The pintle or pivot of the dog 0, also affords a supportfor a coiled spring Z, one end of which catches or bears upon one edgeof the opening of the plate U, while the other end bears upon the outeror upper end of the dog 0, to normally retain the latter in the positionshown in Figs. 1 and 10, with its inner or acting end retracted, saidend of dog being directly opposite the point of re- 1cetptlzlion for,and in engagement with, the door In Figs. 14, 15 and 16 is shownprovision for adapting the mechanism or invention to turns or angles instairways, the same consisting of tri-armed levers A A arranged inplanes at right angles to each other, or at other angles according tothe angle or turn in the stairway, and connected together by a link Ahaving its ends attached to an arm of each lever, two wires or lines Abeing connected to the other two arms of each lever and answering to thecontinuous wires or lines above described.

In operation, it .will be seen that by manipulating or moving theknobbed handle a of the lever A in the required direction the wires orlines B B will be drawn upon, pulling the lever O rearward, causing thelever E, through the link e, to actuate the bell-crank F, in turnsimilarily moving, through the link f, the lever G. The lever G willthus force inward one arm of the lever I effecting through the wire 9the actuation of the lever M, pulling through the wire it the outer endof the dog 0 downward, causing the inward movement of the lower end ofsaid dog which, by its engage ment with the door-latch, disengages thelatter from the socket or catch of the door-jamb.

The continued movement of the hand-lever brings the stud i of the leverGinto engagement with the plate H of the door, and thus results finallyin opening the'door.

It is apparent that the door being under the control of the opening andclosing wires or lines the door can be held open at any reguired angle,and be prevented from slamming or suddenly closing. It will alsobe seenthat the reverse movement of the hand-lever will, through the aforesaidparts, including the two wires or lines, effect the closing of the door.

It is obvious that, should the wires B B become inoperative or caught inthe wall as the door is closed by hand, the lever G would force theopposite end of the lever I inward and, thus throwing the other end ofthe latter lever rearward, would cause the dog 0 to unlatch the door.This, it will be seen, however, is overcome by the use of the latch ordog K locking the lever I when the door is open, and yet disengaged fromthe-leverl when the door is closed as above described to permit of theunlatching of the door when the lever A is operated;

I claim and desire to secure by Letters Patent 1. The combination with adoor of a dooraotuating lever; a bell crank lever supported at someconvenient point; two vertically 'swinginglevers connected at one end,and fulcrumed on the same pin; links connecting the arms of thebell-crank lever to the door actuating lever, and to the free end of oneof the vertically swinging levers; and connections between the secondlever and the handle of the apparatus, all substantially as shown.

2. In a door-operating device, the combinati on with the door-unlatchingmechanism and its initially operating lever hung upon the hinge-post,and means for operating said lever, of a dog or latch engaging, andtemporarily holding said lever against movement, and means for trippingor disengaging said dog or latch from said lever, substantially as setforth.

3. In a door-operating device, the combination, with the door-unlatchingmechanism and its initially operating lever, hung upon the hinge-post,and means for operating said lever, of the dog or latch engaging saidlever, and a slide or push-bar engaging said dog or latch and itselfengaged by the back edge of the door as the latter is closed,substantially as specified.

4. In a door-operating device, the combination, with the door-unlatchingmechanism and its initially operating lever hung upon the hinge-post,and formed of a right angled arm, arranged at one side of its pivot, andan arm standing ata right angle to the aforesaid arm, upon the oppositeside of its pivot and means for operating said lever through one of saidarms, of a dog or latch engaging the other arm of said lever andtemporarily holding it against movement and a slide or push-bar engagingsaid dog or latch and having a re- ICO armed levers, to accommodateturns in the stairway one connected to said lines or wires, and meansfor actuating said levers by addi- 15 tional wires or lines connected tothe other of said levers, substantially as set forth.

In testimony-whereofl affix my signature in presence of two witnesses. V

GEORGE RISCHMULLER.

Witnesses:

J NO. L. BOONE, CHAS. D. WHEAT.

